The effect of hand-held vibrating tools on muscle using bench drill
Introduction: The effects of vibration has been known for many years which causes illness to operators or someone using the vibrating tools or hand held power tools. Muscle weakness, particularly affecting the long finger flexors and affecting grip strength, may occur in association with long-term vibration exposure from hand-held tools. In order to quantify and assess safe levels of human exposure to vibration, measurements and analysis of vibrations are therefore necessary. Aim: The aim of the study was to identify the effect of hand-held vibrating tools on muscles using bench drill. Methods: The study was conducted on 11 subjects (six male and five female). The experiments were performed with three kinds of exposure time, 5, 10 and 15 minutes. Subjects were required to drill wood and mild steel material using bench drill. Electromyography (EMG) and Vernier Labpro with 3 axis accelerometer were used in the experiment. Results: The most affected muscle by vibration was found to be the right Extensor Carpi Radials muscle. The location of Extensor Carpi Radialis muscles is in the lower arm. These findings indicated that lower arm muscles is the most affected compared to other part. The RMS value of EMG for drilling experiment mild steel is higher than wood. Conclusions: Vibration exposure seems to cause an initial increase in muscle activity in the Extensor Carpi Radialis that might be related to muscle fatigue.
Vibration Muscle Activity Electromyography Bench Drill
Mirta Widia Siti Zawiah Md Dawal Fazli
University of Malaya, Kuala Lumpur 50603, MALAYSIA University of Malaya, Kuala Lumpur 50603, MALAYSI
国际会议
17th World Congress on Ergonomics(第十七届国际人类工效学大会)
北京
英文
1-4
2009-08-09（万方平台首次上网日期，不代表论文的发表时间）